Pipe-flanging machine



ll 12, 1932 E. R. SEWARD PIPE FLANGING MACHINE Filed April 18, 1951 2 Sheets-Sheet 1 //v VEN To e;

April 12, 1932 E. Fa. SEWARD l PIPE FLANGING MACHINE 2 Sheets-Sheet 2 Filed April 18, 1951 i I i /NV/:vfroe:

Patented Apr. lf2, 1932 UNITED STATES PATENT oFFici:

ERNEST n. snwn'nn, or xmxwoonnrssonar, .Assrenon To 4LimlvLArnv- MACHINE compania?, oF Sfr. Louis, MISSOURI, A' conroRATroN ornrssoum Y PIPE-FLANGING MACHINE Application alea'aprii 1s,

This invention relates to machines 'for .flanging or votherwise 'shaping the ends-of metal :pipe by 'means 'of rotatable rollers. The principal object of the present invention is y to .provide a 'Huid-operated mechanism for quickly and accurately positioning andfeeding the pipe relative to the shaping rollers andto the die and for receiving the thrust of said rollers. Other objects are simplicity and cheapness of construction, fewness of parts, ease of operation 'and compactne'ss of design. rFhe invention consists in the pipeshaping `machine and in the construction, combinations and Yafria'ng'elnents of parts hereinafter described and'claimed.

through the'pipe clamp "on lthe line 2 2 in Fig. 1; and

Fig. 3 is a longitudinal cross-.section through one of the clamp-actuating .cylinders. i

Referring to the accompanying drawings, my invention is shown in' connection with 'a Apipe-shaping machine comprising a bed -l upon which is mounted a headstock 2` having a horizontally'disposed -rotary and axially f movable spindle 3 mountedl therein which eX- tendslongitudinally of said bed.` Secured `to the outer end of the spindleB is a face plate 4, upon which is rotatably mounted a pipeshaping member,fpreferably inthe form of a, combined flanging and u setting roller 5, adapted to engage the end oi) apipe I(S'located adjacent thereto to form a flange thereon.

Mounted on horizontal slideways m7, which extend longitudinally of the `bed l onopposite sides thereoffis a die-holding slide 8.

The die-holding slide `8 is held against movement along the slideways? preferably 'by means of clamping platesf9 that `are bolted to the undersides of :said die-holding slide andbear against'the under sides f'ledges l 1931. Serial No. 531,081.

that extend longitudinally of the -bed Vl of the machine on opposite sides'thereof. The die-holding slide 8 is provided opposite the face plate 4- /of the headstock2 with a cylindrical opening 8a adapted to receive and support 'the forward end portion of the pipe 6 that is to be flanged; and the face-plateopposing end of said opening is countersunk to provide a seat fora suitable die `member 10 having a recess therein adaptedl to receive and shape the portion of the pipe that is 5 forced therein by the rotatable Hanging roller 5. j

The die-holding. slide r8 'is further prevented vfrom being moved along the slideways 7 under the thrust offthe'iianging roller `5by means of `parallel tensionrods 12 that .extend longitudinally 4of the machine on opposite sides thereof. Each of the tension rods 12 comprises a forward section which extends through'anopening in 'a laterallyextending lugy 2aon'the side of the Vheadstoc'kfQ and is threaded to receive a nut 12a, which bears against the front :face of said flug and fthus serves asian adjustable stop for preventing rearward slidingmovementfofsaidfrod. The

rearenid portionfof the forward sectionof each tensionfrod 12 extends through an openingprovided therefor in Lthe adjacent side' ofthe die-holding slideiBian'd terminatesin anenlarged he-ad'or collar 12l?.disposed in abutting vrelation "to a similar enlarged head or collar12b onfthe adjacent', forward end of the rear section-of said tension rod. `The adjacent ends of the forward and rearfsections of each tension rod 12 are =rigidly secured together 'and -to the` ydie-holdingslide 8 vby -means of a .clamping-platen that is bolted -to sa i'd slide' andsnugly embraces'y the heads 12b onv theadj acenti'ends' of said sections. v

The pipe 6 that is lto l be.' shaped is lheld against vrearward sliding movement under pressurerof thev shaping roller byfV means of a 'clamp 1.3 which isfslidably supported-'on the "tensionv rods 12 tov position and f'fee'd" the pipe lrelative toA said'V shaping rol-ler i and i to the die'lO. lTheipipe Vclamp 13 icomprisesffa main bodyor cradle portion f14,-w'hi`ch1 spans from .tensionlrod' 12 to tension rod'\1'2-an'd` is provided with openings adapted to receive said rods, and a hinged upper jaw member 15 rotatably mounted at one end on one of said tension rods. rlhe fluid-operated hinged jaw l5 of the pipe clamp is forced down upon the pipe by means of a locking device com rising an arm 16 pivotally supported at 1 between two lugs 13 that extend downwardly from the main body member 11i of said clamp beneath the free end of the hinged aw thereof. The locking arm 16 is pivoted so as to swing vertically and is made long enough to bring the free end thereof above the free end of the hinged jaw 15 when said arm isin an upright position. rl`he free end of the arm 16 has a lever 19 pivotally supported thereon for vertical swinging movement transversely of the pivotal aXis of said arm, One arm of said lever is adapted to overhang the free end of the hinged jaw 15 in the closed position thereof and has a roller 2O ournaled thereon adapted to bear against the convexly curved upper cam surface 21 of the free end portion of said jaw, whereby said roller when swung inwardly over the cam surface of the jaw will operate to force the same downwardly into engagement with the pipe. The other arm of the roller supporting lever 19 is provided with an adjusting screw 22, which abuts against the sup-v porting arm 16 and serves as an adjustable stop for adjusting the position of the roller 20 relative to the cam surface on the hinged jaw of the clamp. Y Y

The hinged jaw member 15 of the pipe clamp is opened and closed preferably by means of a piston 26 working in a cylinder 24 pivotally supported at 25 in the lower or main body member 11i of said pipe clamp. rl`he upper end of the rod 26 of the piston is pivotally connected at 27 to lugs 28 that project from the hinged end of the jaw 15 of the pipe clamp. The arm 16 is actuated by means of a fluid-operated piston 29, which works in a cylinder 30 pivotally supported at 31 between the lugs 18 on the lower member 14 of the pipe clamp and is pivotally connected at 31 with said arm by means of a piston rod 32.

The pipe clamp 13 is slid longitudinally of the tension rods 12 to position and feed the pipe relative to the shaping roller 5 and to the die 10 by fluid-operated means comprising a cylinder 33 and piston 34 mounted on each of said tension rods. As shown in Fig. 3 'of the drawings, cach cylinder 33 surrounds one of the tension rods 12 and is provided at its forward end with-al portion of reduced diameter that is threaded or otherwise rigidly secured within the tension rod receiving opening in the adjacent end of the lower or main body member 14 of the pipe clamp 13. The piston 34 is a fixed piston that is pinned or otherwise rigidly secured to the tension rod; and said piston is provided with suitable packing rings 35 for preventing leakage between the piston and cylinder.

A motive fluid under pressure, preferably an incompressible fluid such as oil, from a suitable source is admitted to and released from the forward and rear ends of each cylinder 33 through pipes 36 and 37, respectively, for effecting a relatively recipr-ocating motion between the cylinder and piston members. The pipes 36 and 37 are connected by a branch pipe 38 having a two-Way valve 39 therein at its point of connection with the pipe 36. rEhe pipes 36 and 37 are further connected by a second branch pipe 40, which communicates with the pipe 36 forward of the branch pipe 33 and with the pipe 37 rearward of said branch pipe 33. The branch pipe 40 is provided at its point of connection with the pipe 37 with a two-way valve Ll1. With this arrangement, when it is desired to move the pipe in the pipe clamp 13 in the direction of the shaping roller 5, the valves 39 and il are manipulated to permit the oil to flowy through the pipe 37, branch 33, valve and pipe 36, to the forward ends of the two cylinders 33, thereby imparting a forward sliding movement to said cylinders and the pipe clamp 13 carried thereby. During such forward movement of the cylinders 33 the excess oil in the rear portions thereof is permitted to flow therefrom through the pipe 37, valve 41, branch pipe 40 and again into the pipe 36. When a rearward movement of the pipe clamp 13 is desired, the valves 39 and L11 are manipulated so as to permit the oil to ,be forced into the rear end portions of the two cylinders 33 and thus cause said cylinders, together with the pipe clamp carried thereby, to slide rearwardly along the. tension rods 12. The course of the oil during such movement is through the pipe 37 to the rear ends of the cylinders and from the forward ends of the cylinders through the pipe 36. By this arrangement, the pipe clamp 13 may be readily shifted along the tension rods in either direction to quickly and accurately position and feed the pipe relative to the shaping roller and to the die 10, while the oil, which is incompressible, serves to prevent rearward sliding movement ofthe cylinders under the thrust of said shaping roller.

Obviously, the hereinbefore described arrangement admits of considerable modification without departing from the invention. rfherefore, l do not wish to be limited to the recisearrangement shown and described.

l/Vhat I claim is:

1. A pipe-shaping machine comprising means for shaping the pipe, said means in` cluding a die member adapted to receive a portion of said pipe, a pipe support mounted for horizontal sliding movement towards and away from said die member, meansY for securing said pipe to said support for movef or locking said pipe clamp reageer ment therewith in either direction of its sliding movement, and fluid-operated means for moving said pipe support in either direction of its sliding movement.

2. A pipe-shaping machine comprising means for shaping the pipe, said means including a die member adapted to receive a portion of said pipe, a pipe clamp slidable towards and away from said die member, and fluid-operated means for moving said pipe clamp in either direction of its sliding movement.

3. A pipe-shaping machine comprising means for shaping the pipe, a pipe support movable relative to said shaping means, fluid-operated means for moving said pipe support, said fluid-operated means comprising cooperating bers, one of said members being operatively connected to said pipe support to actuate the same, and means for supplying motive fluid to the opposite ends of said cylinder to effect a relatively reciprocating motion between the cylinder and the piston members.

4. A pipe-shaping machine comprising means for shaping the pipe, a pipe clamp slidable towards and away from said shaping means, and fluid-operated means for sliding said pipe c'lamp, said fluid-operated means comprising a cylinder secured to said pipe clamp, a fixed piston in said cylinder, and means for supplying motive fluid to said cylinder on opposite sides of said fixed piston.

5. A pipe-shaping machine comprising means for shaping the pipe, a pipe clamp movable relative to said shaping means, iluid-operated means for opening and closing said pipe clamp, duid-operated means in closed position, and fluid-operated means for moving said pipe clamp relative to said pipe-shaping means.

6. A pipe-shaping machine comprising means for shaping the pipe, a pipe clamp movable relative to said shaping means, fluid-operated means for opening andA closing said pipe clamp, fluid-operated means for locking said pipe clamp in closed posi-- i' tion, and fluid-operated means for moving said pipe clamp relative to said pipe-shaping means and for preventing movement of the pipe clamp due to the thrust of the pipeshaping means on the pipe therein.

7. A pipe-shaping machine comprising means for shaping the pipe, horizontally disposed tension rods secured to said machine, a pipe clamp slidable upon said tension rods towards and away from said pipe-shaping means, and fluid-operated means for moving said pipe clamp along said tension rods, said fluid-operated means comprising a cylinder slidable longitudinally of each of said 'e tension rods and fixed to said pipe clamp,

piston and cylinder vmempipe clamp and piston incanti-.d said cylinder and iied to the tensio'i rod.

8L A 4pipe-shapiiig` p means' for shaping the pipe, horizontally dis'- po'sed tension-rods secured to said machine, pipe' clamp slidable upon' said tension yrd's towards and away from said pipe-shaping meansQiluid-o'perated means for i'no'ving said pipe clamp along tension rA'odsi and for preventing movement of said pipe' cla-mp due to the thrust of the pipe-shaping means, said fluid-operated means comprising a cylinder slidably mounted on each of said tension rods, a piston located in said cylinder and iiXed tothe tension rod, and means for supplying a motive fluid to the opposite ends of said cylinder.

y9. A pipe-shaping machine comprising means for shaping the pipe, a pipe clamp mounted for sliding movement towards and away from said pipe-shaping means, said pipe clamp being provided with a hinged jaw member, by said pipe clamp for opening and closing said hinged jaw member, and fluid-operated means for locking said hinged jaw in closed position.

10.k A pipe-shaping machine comprising means for shaping the pipe, a pipe clamp mounted for sliding movement towards and away from said pipe-shaping means, said pipe clamp being provided with a hinged jaw member, fluid-operated means carried by said pipe clamp for opening and elo-sing said hinged jaw member, fluid-operated means for locking said hinged jaw member in closed position, said fluid-operated locking means comprising an arm pivotally secured to said pipe clamp, and means on the free end of said arm adapted to bear against the free end of the closed jaw for forcing the same into engagement with the pipe.

11. A pipe-shaping machine comprising means for shaping the pipe, a pipe clamp mounted for sliding movement towards and away from said pipe-shaping means, said being provided with a hinged section, fluid-operated means carried by said pipe clamp for Opening and closing the hinged section thereof, fluid-operated means for locking said hinged section in closed position, said fluid-operated locking means coinprising an arm pivotally secured to said pipe clamp, and a roller rotatably supported on the free end of said arm and adapted to bear against the free end of said hinged section in the closed position thereof.

12. A pipe-shaping machine comp-rising means for shaping the pipe, a pipe clamp mounted for sliding movement towards and away from said pipe-sliaping means, said pipe clamp being provided with a hinged section, fluid-operated means carried by said pipe clamp for opening and closing the hinged section thereof, fluid-operated means fluid-operated means carriedv Y comprising for Vlocking said hinged section in closed position, said fluid-operated lockingr means comprising an arm pivotally secured to said pipe clamp, a roller rotatably supported on the free end of said arm and adapted to bear against the free end of said hinged section in the closed position thereof, and means for adjusting said roller relative to said arm.

Signed at St. Louis, Missouri, this 11th day of April, 1931.

ERNEST R. SEWARD. 

